Impact of sewage sludge, nanoparticles, and clay minerals addition on cucumber growth, phosphorus uptake, soil phosphorus status, and potential risk of phosphorus loss

2021 ◽  
pp. 101702
Author(s):  
Mahdi Jalali ◽  
Mohsen Jalali ◽  
Vasileios Antoniadis
Keyword(s):  
Sewage Sludge ◽  
Clay Minerals ◽  
Potential Risk ◽  
Soil Phosphorus ◽  
Phosphorus Uptake ◽  
Phosphorus Loss ◽  
Phosphorus Status

scholarly journals Determination of available soil phosphorus by chemical methods

1978 ◽  
Vol 50 (4) ◽  
pp. 305-316 ◽  
Author(s):  
Erkki Aura
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Soil Phosphorus ◽  
Phosphorus Uptake ◽  
Ammonium Fluoride ◽  
Acetate Solution ◽  
Phosphorus Status ◽  
Mineral Soils ◽  
Resin Method

Phosphorus uptake by oats in pot experiments was compared with phosphorus test values obtained for experimental soils. Phosphorus was extracted from the soil using acid ammonium acetate solution, Bray 1 solution, Olsen solution, ammonium fluoride, distilled water and anion exchange resin. Intensity values were determined by equilibrating the soils with 0.01 M CaCl2 solution. Soil samples were collected from 30 mineral soils. The best test for phosphorus status proved to be the anion exchange resin method. Good results were also obtained with simple water extraction. An advantage of the water and resin method is that the microstructure of the soil is not substantially changed when using these methods. An intensity measurement was not in itself sufficient for analysis of the phosphorus status, since the intensity drops rapidly when soil releases phosphorus.

scholarly journals Changes in availability and uptake of soil phosphorus influenced by management practices and crop growth stages under peanut cultivation in medium black clay soil of Saurashtra region, Gujarat

2020 ◽  
Vol 41 (6) ◽  
pp. 1781-1787
Author(s):  
R.S. Yadav ◽  
◽  
H.N. Meena ◽  
N.K. Jain ◽  
D. Bhaduri ◽  
...  
Keyword(s):  
Plant Growth ◽  
Management Practices ◽  
Nutrient Management ◽  
Soil Phosphorus ◽  
Phosphorus Uptake ◽  
Clay Soils ◽  
Growth Stages ◽  
Olsen P ◽  
Black Clay ◽  
Raised Bed

Aim: To investigate efficient utilization of soil phosphorus for peanut nutrition through integration of management practices in medium black clay soils of Saurashtra region in Gujarat. Methodology: Soil phosphorus availability and uptake by peanut plants were assessed at five plant growth stages under six different management practices in Kharif season. The availability of soil P was estimated by Olsen P and Resin P extraction methods. The biomass production and phosphorus uptake at each growth stages were observed in order to draw the relationship between these parameters.? Results: The management practices like raised bed with polythene mulch, integrated and organic nutrient management was consistently found promising for enhanced availability and uptake of soil phosphorus under peanut cultivation. The Olsen P decreased with plant growth under all the management options, except organic and integrated nutrient management practices.? In contrary, the resin P generally increased with plant growth, especially under inorganic and organic nutrient management and raised bed with polythene mulch practices. Irrespective of growth stages, the phosphorus uptake by peanut plants was significantly and strongly correlated with biomass production (r=0.85, p<0.01) and Olsen P (r=0.41, P<0.05).? Interpretation: The results indicate that phosphorus requirement of peanut plants can be efficiently met by integrating land and nutrient management practices in these medium black clay soils.

Nutrient and microbial dynamics of soils amended with sewage sludge stabilized with clay minerals and biochar; a preliminary study.

2021 ◽  
Author(s):  
Georgios Giannopoulos ◽  
Anastasia-Garyfallia Karagianni ◽  
Athanasios Balidakis ◽  
Ioannis Ipsilantis ◽  
Theodora Matsi
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Clay Minerals ◽  
Soil Ph ◽  
Acidic Soil ◽  
Alkaline Soil ◽  
Critical Levels ◽  
Microbial Dynamics ◽  
Air Drying ◽  
Organic C

&lt;p&gt;Sewage sludge production from wastewater treatment plants (WWTP) progressively exceeds 60 Million m&lt;sup&gt;3&lt;/sup&gt; p.a. in the EU. Although it is rich in organic matter (OM) and essential nutrients for crop production, sewage sludge is mainly disposed in landfills. Under the framework of Cyclic Economy and EU Green Deal, sewage sludge represents an ideal soil amendment and fertilizer with a potential to increase soil OM, provide nutrients and reduce chemical fertilization. Nonetheless, its agronomic use comes with limitations due to the presence of heavy metals and pathogenic microorganisms. Several stabilization technologies, including composting, thermal treatment and liming, aim to produce safe sewage sludge products suitable for agronomic use.&lt;/p&gt;&lt;p&gt;This incubation study investigated the effects of municipal sewage sludge (stabilized by alternative and common methods) on nutrient and microbial dynamics in two soils; an acidic (pH 5) and an alkaline (pH 8). Stabilized sewage sludge (Thessaloniki WWTP, Greece) with clay minerals (bentonite and vermiculite), biochar (pine residues), Ca(OH)&lt;sub&gt;2&lt;/sub&gt; and air-drying, was applied at 1% and 3% dw, in soil mesocosms (300 g). Non-amended soils were also included as control. Soils were incubated (15 days; 25&lt;sup&gt;o&lt;/sup&gt;C) and equilibrated with periodic wetting and air-drying. Then, chemical soil properties, heavy metal concentrations and microbial abundance were determined using standard methods.&lt;/p&gt;&lt;p&gt;Treated sewage sludge addition in the acidic soil, noticeably increased soil pH (pH 5.2 &amp;#8211; 8.5), compared to the control treatment (pH 5.0). In the alkaline soil, pH remained at similar levels (pH 8.1 &amp;#8211; 8.6). Interestingly, EC increased from 0.42 up to 4.10 and 0.80 up to 3.08 dS m-1 for the acidic and alkaline soils, respectively. The C/N ratio was approx. 10 for all treatments, except biochar (C/N=16). Higher NO&lt;sub&gt;3&lt;/sub&gt;&lt;sup&gt;-&lt;/sup&gt;&amp;#160;concentrations were observed for (CaOH)&lt;sub&gt;2&lt;/sub&gt;, biochar and vermiculite stabilized sewage sludge treatments, and higher NH&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;+&lt;/sup&gt; concentrations were observed for air-dried, bentonite and vermiculite stabilized sewage sludge treatments, in both soils, when compared to the control. Heavy metal concentration increased in all treatments, yet, it remained below legislative critical levels. Sewage sludge amendment increased total heterotroph abundance in all treatments (5.4 &amp;#8211; 7.5 log&lt;sub&gt;10&lt;/sub&gt; CFU g&lt;sup&gt;-1&lt;/sup&gt;) compared to the control. Antibiotic resistant prokaryote abundance ranged between 3.9 &amp;#8211; 7.0 log&lt;sub&gt;10&lt;/sub&gt; CFU g&lt;sup&gt;-1&lt;/sup&gt; and no persistent pattern was found. Pathogens remained below legislative critical levels in all treatments.&lt;/p&gt;&lt;p&gt;Our preliminary results show that stabilized sewage sludge has the potential to be a safe soil conditioner and fertilizer under the framework of Cyclic Economy and EU Green Deal. A desirable increase in soil fertility and organic C was observed for both soils, and an advantageous pH increase for acidic soil. Though, care should be taken not to exceed EC&gt;2 dS m&lt;sup&gt;-1&lt;/sup&gt; when amending agricultural soils with sewage sludge products. Also, further experimentation is required to understand the effects of soil amendments on plant nutrition and productivity.&lt;/p&gt;&lt;p&gt;&amp;#160;&lt;/p&gt;&lt;p&gt;Funding Acknowledgement: The research work was supported by the Hellenic Foundation for Research and Innovation (H.F.R.I.) under the &amp;#8220;First Call for H.F.R.I. Research Projects to support Faculty members and Researchers and the procurement of high-cost research equipment grant&amp;#8221; (Project Number: HFRI-FM17-1907).&lt;/p&gt;

THE INFLUENCE OF VARIETY, SOIL TEMPERATURE, AND PHOSPHORUS FERTILIZER ON YIELD AND PHOSPHORUS UPTAKE BY ALFALFA

1963 ◽  
Vol 43 (3) ◽  
pp. 355-360 ◽  
Author(s):  
M. Levesque ◽  
J. W. Ketcheson
Keyword(s):  
Soil Temperature ◽  
Dry Matter ◽  
Phosphorus Content ◽  
Soil Phosphorus ◽  
Phosphorus Uptake ◽  
Growth Period ◽  
Yield Potential ◽  
Phosphorus Fertilization ◽  
Maximum Value ◽  
Phosphorus Application

Du Puits and Ladak varieties of alfalfa were grown for 10 weeks in the greenhouse on soil-sand media controlled at temperatures of 10°, 18°, and 26 °C. P32-tagged superphosphate was applied at rates of 10 and 80 p.p.m. phosphorus, respectively. Dry matter yields and phosphorus content of the tissue was determined at the end of the growth period. Increasing soil temperature from 10° to 26 °C. caused corresponding increases in total phosphorus uptake as a result of an increase in dry matter yields as well as an increase in the percentage of phosphorus in the plant tissue. Ladak exhibited the higher yield potential although Du Puits was less affected by low soil temperature conditions and appeared capable of making better use of soil phosphorus. With the higher phosphorus application, the root-top ratio for Du Puits was greater than that for Ladak, and the maximum value for this ratio occurred at 18 °C. for each variety. P32 activity measured in the tissue indicated that soil temperature was critical in terms of phosphorus fertilization in the 4- and 6-week stages of growth.

Sorption Indices to Estimate Risk of Soil Phosphorus Loss in the Rathbun Lake Watershed, Iowa

Soil Science ◽  
2011 ◽  
pp. 1 ◽  
Author(s):  
Najphak Hongthanat ◽  
John L. Kovar ◽  
Michael L. Thompson
Keyword(s):  
Soil Phosphorus ◽  
Phosphorus Loss
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